Raw Material Polypropylene Random Copolymer

SHK Pipes and fittings are produced from Polypropylene Random Copolymer Type 3 as raw material having low melt flow rate, high molecular weight and good flexibility.

This raw material is recommended for the production of pressure pipes including potable water transfer lines, hot and cold water transfer lines, floor heating and also for chemical industry application. Good long term pressure resistance and easy processing and installation technique give cold and hot water systems made of PP-R pipes an advantage as an alternative to the traditional systems.

Polypropylene Random Copolymer Type 3 corresponds to German DIN standards.
(a) DIN 8077 Pipe Dimensions
(b) DIN 8078 Pipes General Quality Requirements and Testing
(c) DIN 16962 Pipe Joins and Components for Pressure Pipes of Polypropylene

As per IS : 15801 & DIN 8077 : 1999-07 Wall Thickness and Mass Corresponding to Different Pipe Sizes

D SDR 11/PN10 SDR 7.4 / PN 16 SDR 6 / PN 20
Outerdiameter of pipe (mm) S Thickness pipe in mm Mass in kg/m S Thickness in mm Mass in kg/m S Thickness in mm Mass in kg/m
20 1.9 0.107 2.8 0.148 3.4 0.172
25 2.3 0.164 3.5 0.230 4.2 0.266
32 2.9 0.261 4.4 0.370 5.4 0.434
40 3.7 0.412 5.5 0.575 6.7 0.671
50 4.6 0.638 6.9 0.896 8.3 1.040
63 5.8 1.01 8.6 1.410 10.5 1.650
75 6.8 1.41 10.3 2.010 12.5 2.340
90 8.2 2.03 12.3 2.870 15 3.360
110 10 3.01 15.1 4.300 18.3 5.010
160 14.6 6.38 21.9 9.040 26.6 10.60

Thermal Properties

Properties Test Method Unit Value
Thermal Conductivity at 23 C DIN 52612 W/mok 0.23
Specific heat at 23 C Calorimeter Kj/kgok 1.73
Coefficient of linear thermal expansion DIN 53752 K-1 1.5 x 10-4
Under weight deformation temperature 1.8 N/mm2 ISO 306 °C 44
0.45 N/ mm2 ISO 3146 °C 42
VICAT softening point 0.095 °C 130

Mechanical Properties

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Properties Test Method Unit Value
Tensile Stress at Yield (50mm / minute) ISO 527-1,2 MPa 24
Tensile Stress at Yield (50mm / minute) ISO 527-1,2 % 10
Tensile modules (secant ) ISO 527-1,2 MPa 850
Flexural Modulus ASTM D 790 MPa 850
Tear Strength ISO 527 MPa 40
Elongation at tear ISO 527 % 800
Shore D Hardness DIN 53 505 65
Pipe Friction Factor ISO 179/leA 0.007
CHARPY Impact Strength 23°C ISO 179/leA KJ/m2 22
0°C ISO 179/leA KJ/m2 4.0
-30°C ISO 179/leA KJ/m2 2.5
CHARPY Impact Strength (unnotched) 23°C ISO 179/leA KJ/m2 No failure
0°C ISO 179/leA KJ/m2 No failure
-30°C ISO 179/leA KJ/m2 43